additional sourceWise J., Harasewych M.G. & Dillon R.T. (2004). Population divergence in the sinistral whelks of North America, with special reference to the east Florida ecotone. <em>Marine Biology.</em> 145: 1167-1179., available online athttps://doi.org/10.1007/s00227-004-1411-x[details]